17, Hammondswick, Harpenden occupies a 1,006 m² plot as recorded by HM Land Registry.

Of the 18 other houses in this postcode, 17 have recorded plot sizes, and this one ranks as the 15th largest.

17, Hammondswick, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 05 Feb 2021.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

17, Hammondswick, Harpenden last changed hands on 21st June 2021, selling for £1,975,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 19.8% since June 2021.

• Sold Jun 2021£1,975,000
• Sold Dec 2011£1,225,000

Land Registry records and our Estate Agent network show 57 sales of comparable properties within 2.0 kilometres of 17, Hammondswick, Harpenden since 2009.

Most recently, 3, Netherfield Road, Harpenden, AL5 2AF, a freehold house, sold at £2,325,000 on the 29th October 2025.

Read more about house prices in AL5.

• Sold Oct 2025£2,325,000 | 5 Bed House3, Netherfield Road, Harpenden, AL5 2AF3, Netherfield Road, Harpenden, AL5 2AF
• Sold Apr 2025£1,850,000 | 5 Bed House18, The Deerings, Harpenden, AL5 2PE18, The Deerings, Harpenden, AL5 2PE
• Sold Nov 2024£2,285,000 | 5 Bed House23, The Deerings, Harpenden, AL5 2PF23, The Deerings, Harpenden, AL5 2PF
• Sold Oct 2024£2,250,000 | 5 Bed House1, Hammonds Hill, Harpenden, AL5 2LU1, Hammonds Hill, Harpenden, AL5 2LU
• Sold Sep 2024£2,200,000 | 5 Bed House5, The Chowns, Harpenden, AL5 2BN5, The Chowns, Harpenden, AL5 2BN
• Sold Mar 2024£2,250,000 | 5 Bed House2, Hammonds Hill, Harpenden, AL5 2LU2, Hammonds Hill, Harpenden, AL5 2LU
• Sold Mar 2024£1,750,000 | 5 Bed House14, Hammondswick, Harpenden, AL5 2NR14, Hammondswick, Harpenden, AL5 2NR
• Sold May 2023£1,800,000 | 5 Bed House34, Oakfield Road, Harpenden, AL5 2NS34, Oakfield Road, Harpenden, AL5 2NS
• Sold Feb 2023£2,040,000 | 5 Bed House1, Oakview Close, Harpenden, AL5 2PP1, Oakview Close, Harpenden, AL5 2PP
• Sold Nov 2022£2,000,000 | 5 Bed House6, Netherfield Road, Harpenden, AL5 2AG6, Netherfield Road, Harpenden, AL5 2AG
• Sold Jun 2022£2,200,000 | 5 Bed House40, Oakfield Road, Harpenden, AL5 2NS40, Oakfield Road, Harpenden, AL5 2NS
• Sold Sep 2021£2,050,000 | 5 Bed House30, The Uplands, Harpenden, AL5 2NZ30, The Uplands, Harpenden, AL5 2NZ
• Sold Sep 2021£1,650,000 | 5 Bed House18, Prospect Lane, Harpenden, AL5 2PL18, Prospect Lane, Harpenden, AL5 2PL
• Sold Jun 2021£2,800,000 | 5 Bed House7, Oak Way, Harpenden, AL5 2NT7, Oak Way, Harpenden, AL5 2NT
• Sold May 2021£1,737,500 | 5 Bed House3, Barlings Road, Harpenden, AL5 2AL3, Barlings Road, Harpenden, AL5 2AL
• Sold Feb 2021£1,850,000 | 5 Bed House11, The Chowns, Harpenden, AL5 2BN11, The Chowns, Harpenden, AL5 2BN
• Sold Nov 2020£1,625,000 | 5 Bed House30, Penny Croft, Harpenden, AL5 2PB30, Penny Croft, Harpenden, AL5 2PB
• Sold Aug 2015£1,325,000 | 5 Bed House48, The Deerings, Harpenden, AL5 2PE48, The Deerings, Harpenden, AL5 2PE
• Sold Jul 2012£1,065,000 | 5 Bed House9, The Deerings, Harpenden, AL5 2PF9, The Deerings, Harpenden, AL5 2PF
• Sold Sep 2009£2,266,000 | 5 Bed House10, Wheatfield Road, Harpenden, AL5 2NY10, Wheatfield Road, Harpenden, AL5 2NY

Agents in our network have reported 2 lettings within 2.0 kilometres of 17, Hammondswick, Harpenden across the last 2 years.

The newest of these is 3, Childwick Green, St. Albans, AL3 6JJ, a freehold house let by Collinson Hall in April 2025.

• 
  Let Apr 2025£ Undisclosed | 2 Bed House3, Childwick Green, St. Albans, AL3 6JJ3, Childwick Green, St. Albans, AL3 6JJ
• 
  Let Jul 2023£ Undisclosed | 2 Bed House1, Childwick Green, St. Albans, AL3 6JJ1, Childwick Green, St. Albans, AL3 6JJ

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Our analysis of the public data ranks 17, Hammondswick, Harpenden as the 6th largest and the 7th most expensive of the 18 addresses on Hammondswick, Harpenden, AL5.

Against the AL5 postcode district average, it is £1.078m more expensive than the typical property.

• St Dominic Catholic Primary School

  2.1 km away
• The Grove Junior School

  2.4 km away
• The Grove Infant and Nursery School

  2.4 km away

• Townsend Church of England School

  2.7 km away
• Roundwood Park School

  2.9 km away
• St George's School

  3.2 km away

• Harpenden

  |

  2.4 km away
• St Albans City

  |

  5.5 km away
• St Albans Abbey

  |

  5.7 km away

Environment Agency data suggests this area has a Very Low risk of flooding.